Hiding Sidebar on OnDemand Confluence Page

We want to open specific Confluence pages in a dialog window for our customer, as a help documentation page for specific part of our software. At the moment, we're using iframe HTML component to display the Confluence page. We would like to hide the sidebar on this iframe, to prevent people from navigating away from the pages that we want them to see. Is there a way for us to configure the OnDemand Confluence pages to achieve this?